How can I make newly created directories inside a directory with the setgid bit also have the setgid bit?

Question

I give a directory the setgid bit. Then inside that directory I create another directory, and I want it to also have the setgid bit. I have tried something like umask 6002, but it says "octal number out of range." Is there a way to do this?

score 3 · Accepted Answer · answered Oct 27 '11 at 14:35

3

By default, it does that. The newly created folders in a directory which has SGID will have the same permission and group ownership:

# ls -ld folder/
drwxr-sr-x 10 quanta quanta 4096 Oct 27 21:32 folder/
# mkdir folder/test
# ls -ld folder/test/
drwxr-sr-x 2 root quanta 4096 Oct 27 21:33 folder/test/

answered Oct 27 '11 at 14:35

quanta

50,327
19
152
213

Ah, I see what happened. This does work when manually creating files, but when using mv to bring in files, the setgid bit is ignored. Is there a way around this? – davidscolgan Oct 27 '11 at 14:47
@dvcolgan: "create" is "mkdir". "mv" is "move into". What are you actually trying to do? – Nils Oct 27 '11 at 20:58

score 1 · Answer 2 · edited Apr 15 '13 at 15:59

1

a) Use cp -R instead of mv

b) Use find ./path/ -type d -exec chmod g+rwxs {} \; after mv

edited Apr 15 '13 at 15:59

Community

1

answered Oct 27 '11 at 21:03

Nils

7,657
3
31
71

How can I make newly created directories inside a directory with the setgid bit also have the setgid bit?

2 Answers2